There are 8 billiard balls, and one of them is slightly
heavier, but the only way to tell was by putting it on a
weighing scale against another. What's the fewest number of
times you'd have to use the scale to find the heavier ball?
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Answer Posted / ganesh
According to the `principle of moments` theory, we have to
weigh 3 times, to find the heavier ball.
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